#include <iostream>
#include <Eigen/Dense>

using namespace std;
using namespace Eigen;

int main()
{
    MatrixXd m = MatrixXd::Random(3, 3);
    m = (m + MatrixXd::Constant(3, 3, 1.2)) * 50;
    cout << "m = " << endl
         << m << endl;

    VectorXd v(3);
    v << 1, 2, 3;
    cout << "m * v =" << endl
         << m * v << endl;
}
